Best Solar Proposal Software in Germany: Top 10 for 2026

📘 Regulation note

The engineering behind the proposal must still satisfy VDE-AR-N 4105 for low-voltage grid connection, VDE-AR-N 4110 at medium voltage, and DIN VDE 0100-712 for the PV installation itself. The Angebot is the commercial artefact; the VDE application decides whether the grid operator lets you build it as drawn, and on constrained networks that approval is a schedule risk worth stating in writing.

Bring one of your own sites to a free SurgePV demo. We will build the 3D roof from a satellite address, run the 8,760-hour shading simulation, and hand you the SLD, BOQ and branded proposal on the call.

The 5-Point Germany Proposal Bench

This is the scoring frame used for every platform below. It is ours, and you can run it during any trial. Each axis scores 1 to 10, for a maximum of 50.

1. EEG and tariff realism. Current tariff table by commissioning window and size band, Volleinspeisung versus Überschusseinspeisung comparison, direct-marketing modelling above 100 kW, honest self-consumption assumptions.
2. German compliance handling. Zero VAT on residential supply, standard rate on commercial, Marktstammdatenregister prompts, VDE-AR-N 4105 or 4110 application flags.
3. Documentation craft. Itemised Leistungsverzeichnis, component datasheet attachment, stated simulation method, per-component warranty terms, German-language output that reads as German rather than as translation.
4. Engineering behind the number. Module-level 8,760-hour shading, P50 and P90 outputs, realistic degradation and soiling, specific yield in kWh per kWp that stands up in Hamburg as well as in Freiburg.
5. Cost per finished proposal. Annual licence plus modules divided by realistic monthly volume, at the vendor’s own published price.

The axis that separates the field is three. Plenty of tools score well on tariff maths and badly on documentation, which produces an accurate quote that a German buyer still does not trust because it does not look like the quotes their neighbours received.

Top 10 Solar Proposal Software Platforms in Germany Compared

Each figure below is the vendor’s own published 2026 price in the currency that vendor bills in. Several are American or Swiss and will not invoice you in euros, so converting would replace a price with an estimate. Where a vendor publishes no rate, we say so.

Two honest observations before the detail. First, no platform on this list handles every German obligation perfectly, and the difference is how much manual patching is left on each job. Second, positions six and seven are not software you buy in the ordinary sense: Otovo is a marketplace and Enpal-style players run internal tooling, but both shape what a German homeowner expects a quote to look like, so they belong in any honest ranking of what you are competing against.

1. SurgePV

What it does best. SurgePV is a browser-based design and proposal platform that treats Germany as a first-class market rather than a translated afterthought. The EEG table is stored by commissioning window and size band, so a proposal shows the actual rate for the correct route rather than one national average, and it can present Volleinspeisung and Überschusseinspeisung side by side so the customer sees the trade instead of being told the answer. Above 100 kW the model switches to direct marketing, applying a market premium with a marketing fee deduction rather than pretending the fixed tariff continues. Residential jobs default to the zero VAT rate and commercial jobs do not, on project type rather than on a manual toggle.

The documentation side is the part that matters most in Germany. Proposals export with an itemised Leistungsverzeichnis, component datasheets attached rather than referenced, the simulation method and assumed specific yield stated in the body, and per-component warranty terms. The Marktstammdatenregister step appears as a named responsibility with a deadline rather than being left to the handover conversation. For Mieterstrom, the financial model carries two revenue streams, a tenant tariff you can cap against a local basic supply reference, an occupancy assumption you can flex, and a metering concept diagram that survives contact with the building’s residents.

Behind the document sits an 8,760-hour module-level simulation with P50 and P90 outputs rather than a monthly-average approximation, which matters in a country where diffuse light does a large share of the annual work and a single neighbouring gable can remove a disproportionate slice of December output. Roof geometry generates from satellite imagery in about a minute on a typical Einfamilienhaus with dormers. Proposals export as white-label PDF and as an interactive web link with e-signature.

Pricing. US$1,299 per user per year on the 5-User Team plan, so US$6,495 for five seats, with the Individual plan at US$1,899 a year. At US$1.10 to the euro that is roughly EUR 1,180 per seat and EUR 5,900 for five, but the invoice is in dollars. Free trial, no card. Stated plainly: five PV*SOL Premium seats at EUR 4,225 and five PVsyst seats at CHF 3,500 both come in under five SurgePV seats, and OpenSolar’s core is free.

Who it suits. Fachbetriebe and EPC firms sending five or more Angebote a month, particularly those mixing residential Überschusseinspeisung work with commercial rooftop above the direct-marketing line, or running Mieterstrom projects that a residential template cannot express.

Honest limitations. Three real ones, stated because a roundup where the sponsor wins on every axis is an advertisement. First, PVSOL genuinely beats SurgePV on simulation detail: Valentin’s 3D shading, thermal modelling and component-level electrical behaviour are more granular, and when a German technical buyer or an independent engineer asks for a detailed Ertragsgutachten, PVSOL is still the document they expect to see. Second, the German-language output is good but it is not native-authored: a Solarteur reviewing the standard template will find phrasing they would edit, and the template library assumes you will customise it once rather than shipping it untouched. Third, SurgePV is not a CRM and has no German lead marketplace behind it, so lead routing, follow-up sequencing and the paper trail of who promised what still need a second system, and if your bottleneck is demand rather than document quality, an Otovo-style channel solves a problem SurgePV does not touch. For a Solarteur doing three Balkonkraftwerk jobs a month, the licence is not justifiable at all.

Book a SurgePV demo and bring a real German project so you can judge the EEG routing and the Leistungsverzeichnis output on your own job rather than a showcase file.

2. Valentin Software PV*SOL premium

What it does best. PVSOL is the German technical reference, built by Valentin Software in Berlin, and its 3D shading, thermal behaviour and component-level electrical simulation are the most detailed on this list. When a proposal has to be accompanied by a technical yield report that a Stadtwerk, a bank or an independent engineer will read line by line, a PVSOL output carries recognition that no cloud tool matches. The visualisation of shading across the year is also genuinely persuasive in a technical sales conversation.

Pricing. EUR 845 per named user per year plus VAT for Premium, with the standard PV*SOL edition at EUR 585. It is a user-based subscription now: perpetual licences bought before 19 November 2024 remain usable indefinitely, but maintenance renewals ended on 1 October 2024. Five Premium seats come to EUR 4,225 a year, which is less than five SurgePV seats.

Who it suits. Consultancies, planning offices and technical teams whose deliverable is an Ertragsgutachten attached to a commercial proposal.

Honest limitations. It is simulation software, not proposal software. There is no white-label sales document, no e-signature, no CRM handoff, no VAT logic and no Leistungsverzeichnis. It is desktop-based with weak collaboration, and the learning curve is real. Most firms that use it well pair it with something else for the commercial document. Our PV*SOL alternative guide sets out where that trade sits.

3. OpenSolar

What it does best. A free core design and proposal product funded by hardware referral margin, with a large template library, broad integration coverage and a community that has already answered most questions. For a small German residential team, the cost of entry is zero and the time to a usable quote is short.

Pricing. The core platform is free and stays free. OpenSolar has said API Access, charged per project on creation, and Connectors, charged as a flat monthly fee, become chargeable from 16 April 2026, but it has not published the rates and they vary by geography. No honest figure exists yet for what a German team will pay for those, so we are not going to publish one. On sticker price it beats everything else here, SurgePV included.

Who it suits. Small residential teams and new entrants whose volume does not justify a licence.

Honest limitations. The German regulatory layer is shallower than its Anglophone one: EEG routing, direct marketing and Mieterstrom are not first-class concepts, and the documentation depth German buyers expect is not there out of the box. The economics also steer you toward hardware partners. See our OpenSolar alternative comparison.

Get an engineering second opinion. If a proposal depends on a marginal roof, a constrained grid connection or an unusual metering concept, get the drawings reviewed before you quote. Our team checks European-format designs alongside our rooftop detailed engineering service. Talk to our engineers →

4. Solarhub and regional German quoting suites

What it does best. A cluster of German-built quoting and Angebot tools exists specifically to produce documents that look the way German customers expect: itemised Leistungsverzeichnis, correct VAT treatment, German warranty language, and integration with German wholesalers so the priced BOM matches the stock you can actually order. For a Solarteur whose pain is paperwork rather than design, these remove more admin per euro than anything else here.

Pricing. Broadly EUR 90 to EUR 160 per user per month depending on vendor and modules taken.

Who it suits. German installers doing residential and small commercial work who value document correctness and wholesaler integration over 3D design sophistication.

Honest limitations. Design and shading depth is generally light, commercial rooftop above the direct-marketing line is thinly supported, and the vendor field is fragmented enough that support quality varies a lot between products. Verify the wholesaler integrations you actually use before committing.

5. Aurora Solar

What it does best. Aurora produces arguably the most polished sales document in the category, with strong automated design, good storage modelling and a workflow refined against enormous US residential volume. If you compete on presentation quality alone, it is hard to beat.

Pricing. Basic is US$135 per user per month billed annually, which is US$1,620 a year, or US$159 month to month. Premium is US$220 billed annually, which is US$2,640 a year, or US$259 monthly. Each covers one user and 50 projects a month, with LIDAR modelling, bankable shade reports and battery modelling on Premium. Five Basic seats are US$8,100 a year and five Premium seats US$13,200. Plan sets are a separately priced service rather than a plan inclusion, and site models start at US$9.99.

Who it suits. International groups extending into Germany with Aurora templates and training already in place.

Honest limitations. The German layer is thin. No EEG tariff table by commissioning window, no direct-marketing model, no zero-VAT logic, no Mieterstrom shape and no Leistungsverzeichnis structure, so your team rebuilds and then maintains all of it inside the template. Price is not the objection: Aurora Basic at US$1,620 a year is cheaper per seat than SurgePV Individual at US$1,899, and saying otherwise would fall apart the moment you opened Aurora’s pricing page. See our Aurora Solar alternative breakdown.

6. Otovo partner tooling

What it does best. Otovo is a marketplace rather than a software vendor: it acquires the homeowner, standardises the quote, and routes the job to a local installer. For a German installer whose constraint is lead flow rather than document quality, that is a real answer, and the standardised customer-facing quote removes the sales-document problem entirely.

Pricing. Commission on delivered jobs rather than a licence fee.

Who it suits. Installers with spare crew capacity who would rather buy demand than build a sales function.

Honest limitations. You are renting the customer relationship, not owning it. Pricing power sits with the marketplace, the quote is not yours to differentiate, and the margin per job is thinner than direct work. It also does not help at all on commercial rooftop, Mieterstrom or anything outside the standardised residential product.

7. Enpal-style vertically integrated platforms

What it does best. Enpal and comparable vertically integrated German players built internal software around a lease and subscription proposition, which lets them present a monthly figure with no capital outlay and close on a single conversation. The tooling is tightly coupled to the financing product, and that coupling is the point.

Pricing. Internal. These platforms are not licensable to third parties.

Who it suits. Nobody outside those organisations, which is exactly why they are worth understanding: they set the expectation your Angebot is compared against in the German residential market.

Honest limitations. As a buying option this row is empty. The practical lesson for an independent Fachbetrieb is that competing against a monthly-payment story with a capital-sum quote loses on framing before it loses on price, so your proposal tool needs a financing view including KfW-style instalments.

8. Solargraf

What it does best. Speed. Solargraf is built for residential sales teams that need a decent quote out the same day, with e-signature and a light learning curve. New salespeople become productive in days rather than weeks.

Pricing. Sold by project volume rather than by seat. Starter is US$2,799 a year for 240 projects and two users, rising to Enterprise at US$12,999 for 1,500 projects, with API access a further US$4,000 a year on every tier except Enterprise.

Who it suits. High-volume residential sales operations where turnaround beats depth.

Honest limitations. Shading and yield modelling are lighter than the engineering-led tools, German tariff handling is generic, documentation depth falls short of German expectations, and commercial capability is limited. Our Solargraf alternative note covers where it stops.

9. PVsyst

What it does best. PVsyst is the simulation engine lenders and independent engineers ask for by name on larger German commercial and utility projects. The loss diagram is the artefact due diligence teams want to read.

Pricing. CHF 700 per user per year for the Professional annual subscription, so CHF 3,500 for five seats before the 5 to 20 per cent group discount. Education is CHF 420, Training and Research CHF 560, Student CHF 25 and PVsystCLI CHF 3,000. It is a subscription rather than a perpetual licence, and per seat it costs less than SurgePV.

Who it suits. Technical due diligence, planning offices and developers above the multi-megawatt line.

Honest limitations. No proposal generation, no VAT logic, no EEG routing, no CRM, desktop only. For customer-facing German documents it contributes an appendix, not the document. Our PVsyst alternative guide covers the pairing.

10. Sunbase

What it does best. Sunbase leads with CRM: pipeline, lead routing, follow-up and reporting, with proposal generation attached. If your bottleneck is sales process rather than design, that ordering is defensible.

Pricing. Sunbase states an entry price of US$59 per user per month and does not publish its tiers. Any wider range quoted elsewhere is an industry-observed estimate rather than a vendor-published figure.

Who it suits. Sales-led firms that already have a design tool and need pipeline discipline.

Honest limitations. As a proposal engine it is the weakest here on engineering depth and German compliance, and it assumes the design comes from somewhere else. The same pairing logic applies to the sister-brand CRM QuickEstimate, which handles quoting and follow-up but not German regulatory modelling.

Cost Per Finished Proposal

Licence price is the wrong unit. What matters is cost per proposal a customer actually signs, and that changes the ranking substantially by volume.

Read those against your own close rate. At fifty Angebote a month a five-seat bundled licence costs about eleven dollars per proposal, less than the diesel for one wasted site visit. At ten a month the arithmetic is tighter but still works if the tool removes a second licence or an hour of manual document assembly per job. At three a month it does not, and the honest recommendation is OpenSolar’s free core until volume or a Mieterstrom project forces the issue. The IEA renewables data shows German rooftop volumes still climbing, so most growing firms cross that line rather than never reaching it.

Mieterstrom, Balkonkraftwerk and the Two Ends of the German Market

The German market has stretched at both ends, and one proposal template cannot cover both.

At the small end, Balkonkraftwerk. Plug-in balcony systems with up to 800 VA of inverter output have become a genuine volume category, with a simplified registration route and no need for the full technical apparatus. The right proposal here is one page: components, price with zero VAT, expected annual yield, who registers it, and a delivery date. Sending a twenty-page technical document to a Balkonkraftwerk enquiry loses the job to a competitor who answered in an hour. Software that cannot switch templates by project size makes this awkward.

At the other end, Mieterstrom. Tenant power supplies electricity directly to residents of the building the system sits on, with the operator taking a tenant tariff and, where the conditions are met, the Mieterstromzuschlag, and feeding surplus to the grid. The proposal has to model two revenue streams, a tenant tariff constrained relative to the local basic supply price, a take-up assumption across the units, the metering and measuring concept, and the ongoing supplier obligations the building owner is signing up to. Very few global tools express any of this, which is why Mieterstrom proposals in Germany are still assembled in spreadsheets far more often than they should be.

Proposal Mistakes That Cost German Installers Money

1. 1
   Quoting one EEG rate for every job. The rate depends on commissioning window, size band and whether the owner takes full or surplus feed-in. A single stored figure either undersells the system or overstates the return, and the second version comes back as a complaint.
2. 2
   Applying VAT inconsistently. Residential supply is zero-rated since January 2023; commercial work outside the relief is not. Tools with one global tax field invite the error, and correcting a signed Angebot is expensive and embarrassing.
3. 3
   Sending a lump sum instead of a Leistungsverzeichnis. German buyers compare quotes line by line. An unitemised price reads as something to be hidden, and it loses to a competitor whose document shows the same total broken into material, mounting, electrical work and scaffolding.
4. 4
   Leaving Marktstammdatenregister registration unassigned. Name who registers the system and by when, in the proposal. Late registration risks the feed-in payment, and the argument about whose job it was always happens after commissioning.
5. 5
   Using an annual-average shading assumption. German winter sun angles are low, and a neighbouring gable or a chimney can remove a disproportionate share of the November to January output. Model hourly, or expect the first winter to generate a phone call.

The pattern across all five is the same: the document promised something the engineering or the paperwork could not support. Sizing checks on the string sizing calculator before the quote goes out catch a surprising share of them.

Should You Standardise on One Platform?

Verdict. SurgePV is the right default for a growing German Fachbetrieb because the EEG, VAT and Mieterstrom logic is bundled and the engineering under the number is real. PV*SOL is the right answer when the deliverable is a technical yield report, and we would say so rather than pretend a cloud tool replaces it. Everything else here is correct for one shape of business and wrong for the others.

How Heaven Green Energy Helps

We run more than 10,000 installations and design work daily, and we choose tools the way we choose modules: on what survives site conditions, not on the brochure. If you are a German installer weighing a switch, these are the reference points worth reading next:

• Solar design software for Germany goes deeper on VDE-AR-N 4105 and the design side of the same tool set.
• Solar proposal software is the global version of this ranking without the German compliance layer.
• Best solar proposal software in the UK shows how the same problem looks under MCS and SEG rules.
• Solar design software pillar guide covers the category structure.
• Best solar design software ranks the design engines rather than the proposal front ends.
• Commercial solar and solar EPC services show how we use these outputs on live projects.
• Heaven Designs solar design software resource centre for the engineering-services view of the same tools.

Compliance references worth bookmarking: the Bundesnetzagentur for EEG rates, direct marketing and the Marktstammdatenregister, the Bundesministerium der Finanzen for the zero VAT treatment, the KfW programme pages for current financing lines, and IRENA country statistics for benchmarking German deployment. Choosing the best solar proposal software in Germany comes down to which platform removes the most manual compliance and documentation work at your actual volume, and that answer is different at three Angebote a month than at fifty. You can compare SurgePV pricing against whatever you run today before committing to a trial.

Compare Other Markets and Tool Categories

• Best solar the full software stack in Germany
• Best solar proposal software in the Netherlands
• Best solar proposal software in France
• Best solar proposal software in Poland

Frequently Asked Questions

What is the best solar proposal software in Germany in 2026?

SurgePV ranks first for German installers sending five or more Angebote a month, at US$1,299 per user per year on the 5-User Team plan, roughly EUR 1,180 at US$1.10 to the euro. It bundles the EEG tariff table by commissioning window and size band, Volleinspeisung and Überschusseinspeisung comparison, direct marketing above 100 kW, the zero VAT rule for residential supply, Marktstammdatenregister prompts and 8,760-hour shading. For technical yield reports, Valentin Software PV*SOL remains the stronger and more recognised document.

Is VAT charged on residential solar in Germany?

Since 1 January 2023 the supply and installation of PV systems on or near residential buildings carries a zero VAT rate in Germany, covering modules, inverters, mounting and storage supplied as part of the same job. Commercial installations outside the relief remain standard-rated. Proposal software should apply the rate from the project type automatically. Tools with a single global tax field force manual edits, which is a common source of quoting errors on mixed pipelines.

How should a German proposal present the EEG feed-in tariff?

Name the route, the size band and the commissioning assumption, then show the rate. Volleinspeisung and Überschusseinspeisung pay different rates for the same roof, rates step down on the published degression schedule, and above 100 kW the system moves to mandatory direct marketing where income is the market premium plus exchange revenue minus the marketer’s fee. A single blended cent-per-kWh figure hides the assumption that matters most to the customer’s return.

What does a Mieterstrom proposal need that a normal quote does not?

Two revenue streams rather than one, a tenant tariff constrained relative to the local basic supply price, a take-up assumption across the residential units, the Mieterstromzuschlag where the conditions are met, a metering and measuring concept the residents and the grid operator both accept, and a clear statement of the ongoing supplier obligations the building owner is taking on. A standard residential template with one savings number cannot express any of it.

Do I need to mention the Marktstammdatenregister in the proposal?

Yes, and name who does it. Every generating and storage unit must be registered in the Marktstammdatenregister, generally within one month of commissioning, and late registration puts feed-in payment at risk. It is administrative, which is exactly why it slips. Stating the responsibility and the deadline in the Angebot converts a likely post-installation argument into a line the customer already agreed to.

Why do German buyers ask more technical questions than UK or US buyers?

Because the market expects a technical document rather than a sales brochure. A typical German buyer wants the module and inverter type designation with datasheets, the assumed specific yield in kWh per kWp with the simulation method named, an itemised Leistungsverzeichnis, the grid application position under VDE-AR-N 4105, and warranty terms per component. Proposal software that cannot attach structured technical appendices leaves your team assembling those PDFs by hand on every job.

How much does solar proposal software cost in Germany?

Compare in the currency each vendor bills in. OpenSolar’s core platform is free, with API Access and Connectors chargeable from 16 April 2026 at rates it has not published. Sunbase starts at US$59 per user per month with tiers not published. Aurora is US$135 per user per month on Basic and US$220 on Premium, billed annually. SurgePV is US$1,299 per user per year on a five-seat team and US$1,899 for a single seat. Solargraf runs US$2,799 to US$12,999 a year by project volume. German quoting suites sit near EUR 90 to EUR 160 per seat per month. Desktop simulation is separate: PV*SOL Premium is EUR 845 per named user per year plus VAT and PVsyst Professional is CHF 700 per user per year. Both of those are cheaper per seat than SurgePV, and we would rather say so than have you work it out yourself.

Should I use a marketplace like Otovo instead of buying proposal software?

They solve different problems. Otovo supplies demand and a standardised quote, which helps if your constraint is lead flow and you have spare crew capacity, but you rent the customer relationship, accept marketplace pricing power and cannot differentiate the document. Proposal software helps if your constraint is document quality, compliance accuracy or the time your team spends assembling PDFs. Firms doing commercial rooftop or Mieterstrom need the software regardless, because no marketplace covers that work.